CVE-2018-16840
curl: Use-after-free when closing "easy" handle in Curl_close()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A heap use-after-free flaw was found in curl versions from 7.59.0 through 7.61.1 in the code related to closing an easy handle. When closing and cleaning up an 'easy' handle in the `Curl_close()` function, the library code first frees a struct (without nulling the pointer) and might then subsequently erroneously write to a struct field within that already freed struct.
Se ha detectado un error de uso de memoria dinámica (heap) previamente liberada en Curl, desde la versión 7.59.0 hasta la 7.61.1, en el código relacionado con el cierre de un controlador "easy". Al cerrar y limpiar un controlador "easy" en la función "Curl_close()", el código de la biblioteca libera, en primer lugar, un struct (sin pasar el puntero a null) y, después, podría escribir erróneamente en un campo struct dentro del struct ya liberado.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2018-09-11 CVE Reserved
- 2018-10-31 CVE Published
- 2024-08-05 CVE Updated
- 2024-08-15 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-416: Use After Free
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| http://www.securitytracker.com/id/1042013 | Third Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16840 | Issue Tracking |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://curl.haxx.se/docs/CVE-2018-16840.html | 2019-10-09 | |
| https://github.com/curl/curl/commit/81d135d67155c5295b1033679c606165d4e28f3f | 2019-10-09 |
| URL | Date | SRC |
|---|---|---|
| https://security.gentoo.org/glsa/201903-03 | 2019-10-09 | |
| https://usn.ubuntu.com/3805-1 | 2019-10-09 | |
| https://access.redhat.com/security/cve/CVE-2018-16840 | 2019-06-18 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1642203 | 2019-06-18 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Haxx Search vendor "Haxx" | Curl Search vendor "Haxx" for product "Curl" | >= 7.59.0 <= 7.61.1 Search vendor "Haxx" for product "Curl" and version " >= 7.59.0 <= 7.61.1" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10" | - |
Affected
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